@article{DA,
      recid = {6810},
      title = {Starr-Edwards heart valves},
      number = {DA},
      abstract = {Digital scan of a 35mm slide. Image of four Starr-Edwards  heart valves, mitral and aortic, placed to show side and  bottom views. All four set on reddish-brown background. Top  two valves have typed label: STARR-EDWARDS AORTIC VALVE  PROSTHESIS. Label for lower pair has been cropped out of  image.},
      url = {http://digitalcollections.ohsu.edu/record/6810},
      doi = {https://doi.org/10.6083/M47943BB},
}